Swiftdata Expert Skill

If you're building SwiftData persistence into a Swift or SwiftUI app, this skill walks you through the full stack: schema design with @Model and @Relationship, querying with FetchDescriptor, migrations with SchemaMigrationPlan, CloudKit sync setup, and ModelActor concurrency isolation. It starts by asking about your deployment target and container wiring before diving into solutions, which saves you from debugging phantom issues. The triage playbook is genuinely helpful, mapping common problems like empty fetches or duplicate rows to concrete next steps. It also flags anti-patterns like shipping schema changes without migration rehearsal. Solid if you're past the basics and need architectural guidance or migration safety checks.